Stable. Maneuverable. Lightweight

When GT started building bikes, it was all about hitting the trails with your buddies, not just gearing up for a long race weekend. We never lost touch with those roots, so we’ve developed the Helion for the XC rider who wants to go hard with friends and sometimes get rewarded with a cold beer, instead of another medal. Stable, maneuverable, and lightweight, the all-new GT Helion is the ultimate blend of past, present, and future fun.

RockShox Reba RLT Suspension Fork

The RockShox Reba RL fork comes with 110mm of travel, providing a silky smooth performance and also maintaining traction, Remote lock out allowing you climb easier with a rigid fork and descend with pleasure to hit all the rock-infested trails with the full travel.

Shimano XT/SLX Drivetrain

The Shimano drivetrain is the perfect combination of performance and durability, with the XT shadow plus rear derailleur to enhance gear indexing and to reduce chain slap, the SLX chainset with its forged alloy arms help to reduce weight but maintain the strength. These both will ensure the classic Shimano reliable shifting and performance

Shimano SLX Hydraulic Brakes

Shimano SLX hydraulic disc brakes with a 180mm center lock rotor on the front and the rear, offering high stopping power for tracks that you might not normally hit up.

Race Face Finishing Kit

Finishing kit is by Race Face, set up with 6061 aluminum handlebars, stem, and seat post. Topped off with a WTB Silverado saddle for that little bit more comfort.

Built, Tuned and Tested

Rest assured that each GT bike is fully built, tested and tuned by Wiggle's team of qualified bike mechanics to ensure your bike arrives in perfect condition. Find out which size fits you by clicking the size chart tab.

Note: Manufacturer may reserve the right to change the specification of that listed or shown on this page.

About Full Suspension Mountain Bikes

If you after a snappy handling mtb and enjoy off-road endurance riding then a Full Suspension Mtb is for you. At Wiggle we stock the very best spec'd full suspension bike brands in Felt, Focus, Kona, Mongoose, Rocky Mountain, plus loads more besides. All our full suspension mountain bikes provide a superb riding experience with quality rear shocks and suspension forks, from XC, Freeride, Enduro through to Downhill, Wiggle will have the bike for you. You will find that the wide tyres give you bags of grip and together with the front and rear suspension you will easily glide over trail detritus, roots and rocks. So you'll be likely to be pushing your own limits before you find the bike's!

About the GT brand

GT Bikes, based in Southern California, has been in the business of making great bikes since 1972 when Gary Turner launched one of the first performance BMX race bikes.
Developing world class bikes in conjunction with the world’s best BMX rider such as Greg Hill, Eddie Fiola, Jamie Bestwick, Clive Gosling and Dave Mirra, GT grew into one of the biggest brands.
With a BMX heritage and based in California the MTB scene was the perfect addition in the late 80’s . GT used the same model of developing performance bikes with the best riders, pioneering new suspension technology and the use of carbon fibre in MTB frames. Winning numerous World Championships in downhill and cross country racing with legendary riders such Nicholas Vouilloz, Steve Peat and more recently Atherton Racing, with Dan Gee and Rachel Atherton.
Hans “No Way” Ray has been one of the figurehead of GT’s longstanding team rider program, setting the record for longest sponsorship deal of 26 years and counting.
It hasn’t always been about dirt, in the mid 90’s GT took there carbon technology and build track bikes for the USA Olympic team, the bike was later banned for being too fast. GT latest crop of Enduroad Grade models play perfect testament to the brands heritage across, dirt, road and track.

Sizing Information

The size chart below will get you on the right size bike. Experienced riders may also wish to refer to the geometry chart for more detail.

Getting the Right Fit

At Wiggle we measure each of our bikes to build accurate size charts for our customers. Our qualified team of mechanics then individually check each order, against measurements supplied by you, to ensure the size chosen is correct. Another reason you can have complete confidence when buying a bike from Wiggle!

If you are on the change over between sizes both options will fit. Racers and experienced riders would usually select a smaller size as this offers quicker handing. A larger bike offers more stability and is more suited to new and intermediate riders.

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Small

Medium

Large

Extra Large

Height

cm

156 - 170cm

168 - 180cm

178 - 188cm

185 - 196cm

ft

5′ 1″ - 5′ 7″

5′ 6″ - 5′ 11″

5′ 10″ - 6′ 2″

6′ 1″ - 6′ 5″

Inside Leg

cm

68 - 76cm

74 - 80cm

82 - 86cm

85 - 90cm

inches

27″ - 30″

29″ - 31″

32″ - 34″

33″ - 35″

Small

Medium

Large

Extra Large

Seat Tube - Center to Top

mm

460mm

460mm

490mm

520mm

Top Tube (Virtual)

mm

579mm

606mm

634mm

664mm

Standover Height

mm

824mm

826mm

849mm

873mm

Head Tube Angle

Degrees

69.5°

69.5°

69.5°

69.5°

Seat Tube Angle

Degrees

70.5°

70.5°

70.5°

70.5°

Chainstay Length

mm

438mm

438mm

438mm

438mm

Head Tube

mm

90mm

103mm

119mm

135mm

Bottom Bracket Height

mm

325mm

325mm

325mm

325mm

Fork Rake

mm

42mm

42mm

42mm

42mm

Wheelbase

mm

1062mm

1090mm

1118mm

1148mm

Bottom Bracket Drop

mm

26mm

26mm

26mm

26mm

Front Centre

mm

625mm

653mm

681mm

711mm

Stack

mm

0mm

0mm

0mm

0mm

Reach

mm

0mm

0mm

0mm

0mm

Delivery Information

We are sorry, but due to your delivery destination USA we can not dispatch this item.

International Delivery

Wiggle ships to over 100 countries. To see what delivery options are available for other destinations you can update your delivery destination via the International Options feature at the top right of the website.